package com.developerfusion.XMLReader;

import java.io.File;
import org.w3c.dom.Document;
import org.w3c.dom.*;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public class ReadAndPrintXMLFile
{

	public static void main(String argv[]) {
		try {

			DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
			DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
			Document doc = docBuilder.parse(new File("book.xml"));

			// normalize text representation
			doc.getDocumentElement().normalize();
			System.out.println("Root element of the doc is " + doc.getDocumentElement().getNodeName());

			NodeList listOfPersons = doc.getElementsByTagName("person");
			int totalPersons = listOfPersons.getLength();
			System.out.println("Total no of people : " + totalPersons);

			for (int s = 0; s < listOfPersons.getLength(); s++) {

				Node firstPersonNode = listOfPersons.item(s);
				if (firstPersonNode.getNodeType() == Node.ELEMENT_NODE) {

					Element firstPersonElement = (Element) firstPersonNode;

					// -------
					NodeList firstNameList = firstPersonElement.getElementsByTagName("first");
					Element firstNameElement = (Element) firstNameList.item(0);

					NodeList textFNList = firstNameElement.getChildNodes();
					System.out.println("First Name : " + ((Node) textFNList.item(0)).getNodeValue().trim());

					// -------
					NodeList lastNameList = firstPersonElement.getElementsByTagName("last");
					Element lastNameElement = (Element) lastNameList.item(0);

					NodeList textLNList = lastNameElement.getChildNodes();
					System.out.println("Last Name : " + ((Node) textLNList.item(0)).getNodeValue().trim());

					// ----
					NodeList ageList = firstPersonElement.getElementsByTagName("age");
					Element ageElement = (Element) ageList.item(0);

					NodeList textAgeList = ageElement.getChildNodes();
					System.out.println("Age : " + ((Node) textAgeList.item(0)).getNodeValue().trim());

					// ------

				}// end of if clause

			}// end of for loop with s var

		} catch (SAXParseException err) {
			System.out.println("** Parsing error" + ", line " + err.getLineNumber() + ", uri " + err.getSystemId());
			System.out.println(" " + err.getMessage());

		} catch (SAXException e) {
			Exception x = e.getException();
			((x == null) ? e : x).printStackTrace();

		} catch (Throwable t) {
			t.printStackTrace();
		}
		// System.exit (0);

	}// end of main

}